Chucky Jeffery added 12 points and 10 rebounds for the Buffaloes (23-5, 12-5 Pac-12), who won their eighth in a row to clinch a bye in next week's conference tournament.

Colorado is a game ahead of Washington for fourth place in the Pac-12, but the Buffaloes own the tiebreaker because they won the head-to-head matchup with the Huskies last weekend in Boulder, Colo. Colorado's last regular-season game is Sunday at Oregon State.

Roberson's three-point play with 43 seconds left in the half gave the Buffaloes a 24-21 lead. The Buffs led 30-29 with 12 minutes to play, and outscored the Ducks 14-3 over the next four minutes to build a 12-point lead.

Liz Brenner led Oregon (4-25, 2-15) with 12 points. Jillian Alleyne had 10 points and 12 rebounds for the Ducks.

Missy Franklin, Jenny Simpson, Adeline Gray and three other Colorado women could be big players at the 2016 Rio OlympicsWhen people ask Missy Franklin for her thoughts about the Summer Olympics that will begin a year from Wednesday in Rio de Janeiro, she hangs a warning label on her answer.